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Table 3 Distribution of perceived milk supply (N = 237)

From: The relationship between perceived milk supply and exclusive breastfeeding during the first six months postpartum: a cross-sectional study

Variable n % Perception of the milk supply
Mean SD Min Max p value
Age (years)
  ≤ 30 129 54.4 122.3 9.7 96 139 0.90 a
  > 30 108 45.6 122.4 10.3 81 140  
Educational level
 High school and less 159 67.1 122.1 9.5 95 140 0.57 a
 College and above 78 32.9 122.9 10.9 81 138  
Employment status
 Not working 173 73.0 123.1 9.7 81 139 0.07 a
 Working 64 27.0 120.5 10.5 98 140  
Religion
 Islam 214 90.3 122.3 9.7 95 140 0.77 a
 Other 23 9.7 122.9 12.1 81 135  
Parity
 Primiparous 95 40.1 120.9 10.4 96 139 0.06 a
 Multiparous 142 59.9 123.4 9.6 81 140  
Mode of Delivery
 Vaginal delivery/IVD 173 73.0 122.9 9.6 95 140 0.17 a
 Cesarean delivery 64 27.0 120.9 10.8 81 139  
Delivery location
 Hospital 163 68.8 121.9 10.6 81 140 0.27 a
 Public health center/midwifery clinic 74 31.2 123.3 8.4 100 138  
Rooming-in
 No 86 36.3 120.4 9.4 98 140 0.02 a
 Yes 151 63.7 123.5 10.1 81 139  
Skin-to-skin contact
 No 71 30.0 119.2 10.7 81 139 0.001 a
 Yes 166 70.0 123.7 9.3 95 140  
Breastfeeding self-efficacy
  ≤ 50 31 13.1 111.8 10.7 81 132 0.0001 a
  > 50 206 86.9 123.9 8.9 95 140  
Infant’s age (months)
 0 ~ 1 56 23.6 122.0 10.8 81 139 0.31 b
 2 ~ 3 95 40.1 121.4 9.4 96 139  
 4 ~ 5 86 36.3 123.6 10.0 98 140  
Infant’s gender
 Girl 127 53.6 121.9 10.2 81 139 0.50 a
 Boy 110 46.4 122.8 9.8 95 140  
Infant’s birth weight (g)
  ≤ 3000 95 40.1 121.8 9.8 96 140 0.51 a
  > 3000 142 59.9 122.7 10.1 81 139  
Infant sucking behavior
 Negative 37 15.6 119.4 9.4 98 134 0.05 a
 Positive 200 84.4 122.9 10.0 81 140  
  1. Note: IVD instrumental vaginal delivery, SD Standard Deviation, Min Minimum, Max Maximum; at-test; bone-way ANOVA